Does anyone remember the old game Star Control? Or the much-improved Star Control II: Ur-Quan Masters?
I recently discovered this old classic and after only about an hour of play, realized just how wonderful it would fit into planescape! While the actual setting is clearly more suited to spelljammer, the races and humor are just right.
Anyone who's played this would immedietely think that the humor of the cowardly Spathi, and the annoying, yet powerfully psychic Pkunk would go perfect in Sigil. Or the adorable zoq-fot-pik bouncing around.
The Illwrath and the Druuge would make terrific fiends, while not necesarily needing to be fitted into Tanar'ri or Baatezu.
And then there's the Orz and the Arilou Lalee'lay, both existing outside of time, space, and in the case of the Orz, language. Each would make a fine, mysterious extraplanar creature from an unknown plane of existance.
I encourage any that have never heard of the game Ur-Quan Masters to give it a try, and immedietely recognize planescape-style material.
I recommend Frungy. Everyone loves Frungy. Let's talk about Frungy.
But yeah, great game. As much a roleplaying game as a space ship shooter/exploration game can be. Also, the Illwrath with their blind destructive fanatism would make nice fiends, but the Druuge are more or less Baatezu already, no?I mean, they have the most cruel spaceships ever and they are a corporation.
The Pkunk could easily end up in Sigil anyway, they talk about Planar travel in the game. They visit the Astral Plane and the Upper planes to talk to the gods.